Electromagnetic joining method for each metallic member having tubular joint part


PURPOSE: To improve the reliability of a joined part by fitting tubular joint parts by placing a metallic member whose hardness is low to the inside, placing an electromagnetic coil in the inside of these joint parts and allowing a pulsative large current to flow, and welding by pressure and joining each of both the joint parts. CONSTITUTION: Metallic members 1, 2 having a tubular joint part 1c are joined mutually in its joint part. As for said both metallic members, those which have different hardness are used, and said both tube joint parts are fitted to each other so that the metallic member whose hardness is low become the inside. By placing an electromagnetic coil 3 in the inside of these joint parts and allowing a pulsative large current to flow to this coil, both the joint parts are welded by pressure and joined mutually. In such a way, it is possible to join them in any position, and also, a brazing failure which follows a flux entrapment phenomenon is not generated either, and also, troublesome dew-point management and temperature management, etc., become unnecessary. COPYRIGHT: (C)1992,JPO&Japio




Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)


Cited By (8)

    Publication numberPublication dateAssigneeTitle
    CN-103406418-ANovember 27, 2013三峡大学径向与轴向双向加载式金属管件电磁成形方法及装置
    CN-105013921-ANovember 04, 2015哈尔滨工业大学Magnetic pulse forming method for lining bimetal composite pipe
    DE-102006050292-A1April 24, 2008Eads Deutschland GmbhEdge hardening process for boring in metal workpiece involves inserting metal shell as precise fit and surface welding it by pulse magnetic welding
    DE-102006050292-B4November 06, 2014Airbus Defence and Space GmbHVerfahren zur Randschichtverfestigung einer Bohrung in einem metallischen Werkstück
    EP-1103333-A1May 30, 2001Dana CorporationApparatus and method for joining vehicle frame components
    EP-1128083-A3October 29, 2003Bayerische Motoren Werke AktiengesellschaftProcédé de fabrication d'un disque de frein
    EP-1128084-A3October 29, 2003Bayerische Motoren Werke AktiengesellschaftVerfahren zur Herstellung einer Bremsscheibe
    US-7441335-B2October 28, 2008Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Methods of electromagnetic forming aluminum alloy wheel for automotive use